Improvement in windmills



SAMUEL W. MAY.

Wind` Mills.

No. 125,593. 'PatentedAprila,1872il PATENT EEICE.

SAMUEL w. MAY, or GAEEsBUne, iLLiNois.

IMPROVEMENT IN WINDMILLS. j

Specification forming part of LettersPatent No. 125,593, dated April 9, 1872.

SPECIFICATION.

I, SAMUEL W. MAY, of Galesburg, ,county of Knox and State of Illinois, have invented certain Improvements in Windmills, of which the following is a specification:

Nature and Objects of the Invention. The nature of my invention relates to improvements in that class of windmills in which the wheel of sails rotates in a vertical plane, and is kept on the wind'7 by a tail vane; and the invention consists in the construction and arrangement of devices for adjusting the vane so that it may be set to turn the wind-wheel either on or off the, wind, and regulate the speed of same in high winds, as hereinafter more fully set forth. m

Description of the Accompanying Drawing.

General Description.

A is an upright or post projecting from a platform, B, and stayed by braces a a. C is a hollow cylinder secured in a vertical position to the top of the post A. D is a hollow cylinder fitting neatly inside of cylinder C, and

' is provided with an annular flange, d, at its upper end, which, resting on the upper end of the cylinder C, supports it in working position. F G are plates projectinghorizontally from the upper end of thc cylinder D, as shown plainly at Fig. 5, for the purpose of supporting the tail-vane, and the bearings forthe wind-wheelr shaft. f and f' are ledges turned up on the sides of the plate F. cl' is a small projecting lug on the lower end of the cylinder D, with a hole through which a pin is inserted for the purpose of holding the cylinder D in place in the cylinder C. H is a block or arm secured to the plate G by bolts 71. h. I I are blocks sccured to the arm H, and form bearings for the wind-wheel shaft J. K is the wind-wheel constructed as hereinafter described, and secured to the outer end ofthe shaft J. The dotted lines J' on the inner end of shaft J, Fig. 1, show an eccentric over which is an eccentrichoop'J", carried on the upper end of apistonrod, L, which passes through the rings or cylinders D C, and leads to a pump, M. N is the tail-vane, carried on the end of a stem N'. The stem N' rests on the plate F, and is pivoted thereto by the bolt n, in such manner that the tail-vane may be oscillated laterally between iixed limits formed by the ledges ff'. P `P' are arms with eyes on their outer ends attached to and extending outward from the plate F, as shown at Fig. 2. Q Q' are cords, oneof which is attached to the outer end of each of the arms P P', and passing through eyes p p', on the sides of the tail-vane N, as shown at Fig. 2, extend downward to within reach, as shown at Fig. 1. R is a weight which may be suspended on either cord Q or Q'. In the construction of my wind-wheel K, I use a castiron hub, S, having diagonal mortises s s s's s s s s s on its periphery', as shown at Fig.. 4. The inner ends of the sails V are driven tightly into the mortises ss,which hold them securely and iirmly at the desired angle, a band or rim, K', being passed around their outer ends, and the outer end of each sail being secured thereto completes the wheel. The sails are made very narrow, and their adjacent edges lapped, as shown by dotted lines at Fig. 3. This construction not only produces a strong and durable wheel, but also a very cheap one, and thc sails being numerous and lapped, it will be plainly seen, will prevent very great speed of revolution in high winds, as after a certain high speed is obtained the passage of the wind through the sails will be nearly cut oiit'.

The operation of my invention is as follows: The weight R being hung on the lower end of the cord Q', will dr'aw the tail-vane into the position shown by full lines at Figs. l and 2, in

which position the vane N will serve to keep the wheel K on the wind,'7 and its rotations, will, by means of shaft J and its eccentric J', impart a reciprocating motion to the rod L. To x the vane N in this position a pin may be inserted in the hole n". Now, by changing the weight R to the cord Q, it will draw the tail-vane N into the position shown bg the Claim. dotted lines N at Fi 2 the cords zis- Sumng the position sowll by dotted lcins QH l The adjustable Vane N, operated in conne?- Q/f. In this mi; described position the mii- 21011 mh lla's F .G1 by means Offms P P i vane N Will turn the Wheel K edge to Wind, Cords Q Q and Welght R1 Subsmutla'uy as and and of course stop its rotation. The vane N for the purpose Specled' may be held in this position permanently, if SAMUEL W. MAY. desired7 by inserting 2t pin in the hole u. The

Weight of the Weight R should be snfeient to Witnesses:

hold the vane N in either position described, mPLATTL R. RICHARDS, and the pin u is only used to fix the van@ from JOSEPH STAFFORD. bein g moved by the Weight R, at all. 

